61377330990 has 16 divisors (see below), whose sum is σ = 147305594448. Its totient is φ = 16367288256.

The previous prime is 61377330967. The next prime is 61377331031. The reversal of 61377330990 is 9903377316.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022955487 + ... + 1022955546.

It is an arithmetic number, because the mean of its divisors is an integer number (9206599653).

Almost surely, 2^61377330990 is an apocalyptic number.

61377330990 is an abundant number, since it is smaller than the sum of its proper divisors (85928263458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61377330990 is a wasteful number, since it uses less digits than its factorization.

61377330990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045911043.

The product of its (nonzero) digits is 642978, while the sum is 48.

The spelling of 61377330990 in words is "sixty-one billion, three hundred seventy-seven million, three hundred thirty thousand, nine hundred ninety".